Ligature device for body parts

ABSTRACT

A ligature device for body parts, with a closure housing, having a base wall, two lateral walls, a cover wall on the upper side thereof and a ligature strap, which may be coupled or is detachably coupled at one end of the closure housing, by a clipping buckle which may be introduced from the rear between an intermediate wall and the cover wall. The above is run or may be run with the other free end thereof between a rocker, pivotably mounted on the base wall and an intermediate wall, arranged at a separation above the above, through the closure housing, to form a loop and may be clamped by the rocker against a front section of the intermediate wall, connected to the closure housing. Easy manipulation is achieved with a simple construction, whereby the intermediate wall includes a sprung section, projecting from the upper side, by which the rear section of the clipping buckle is raised and pressed, in the assembled state, with the back upper face thereof against a counter support, fixed to the housing. The clipping buckle is held back, against being pulled out, by a rearward retaining element and/or a front retaining element co-operating with a counter element or counter piece of the closure housing and may be released by pressing down on the rear region.

[0001] The invention relates to a tourniquet device for parts of the body, with a closure housing having a bottom wall, two lateral walls and a covering wall on its top, with a tourniquet strap, which is or can be releasably connected with a locking shoe, which can be inserted from the rear between an intermediate wall and the top at the end of the closure housing, which strap is or can be fed with its other free end between a rocker, pivotably seated on the bottom wall, and an intermediate wall arranged at a distance from the latter, through the closure housing and can be clamped by means of the rocker against a front section of the intermediate wall, which is connected with the closure housing.

[0002] Such a tourniquet device is disclosed in DE 42 10 255 C1 and also in DE 94 18 598 U1. A rocker, which makes a transition on its front into a convex actuating section extending upward and toward the rear, is pivotably seated above a bottom wall of the closure housing and has a pass-through opening 4.3 in the transition area for passing through a tourniquet strap, which extends above the rocker and which, on the rear of the closure housing, forms a loop, which can be placed around the body part to which the tourniquet is to be applied and is introduced by means of a locking shoe into a receiving shaft on the rear of the housing and is snapped in. The tourniquet strap is pushed against the underside of an intermediate wall arranged between the bottom wall and the top and is clamped in place when the rear section of the rocker is pulled downward in the direction toward the bottom in the course of applying the tourniquet. The locking shoe has a locking tongue, which projects upward and is supported on the underside of the covering wall and can be pushed downward for unlocking and pulling out the locking shoe with the respective tourniquet strap end by means of a separate pressure element arranged above the tongue.

[0003] The object of the invention is based on making available a tourniquet device of the type mentioned, which offers advantages regarding its construction and handling.

[0004] This object is attained by means of the characteristics of claim 1. In accordance therewith it is provided that the intermediate wall has a resilient section projecting toward the top, by means of which the rear area of the locking shoe is lifted and, in the introduced state, is pushed with its rear top area against an abutment fixed on the housing, wherein the locking shoe is secured against being pulled out toward the rear by means of a rear securing element and/or a front securing element, which cooperate with a counter-element or counterpiece of the closure housing, and can be released by pressing its rear area downward.

[0005] Because of the steps in accordance with claim 1, no separate pressure element is required and a precisely shaped tongue required for dependable functioning in the locking shoe embodied as a movable part can be omitted in particular, and extremely simple handling is achieved.

[0006] If it is provided that the locking shoe has a plug-in section for being plugged into the closure housing, and if it is provided with an actuating section connected to its rear for release, the locking shoe can be plugged in and released in a simple manner, so that a simple construction is favored. Only two movably seated actuating elements are required for controlling the loop via the rocker, on the one hand, and the complete opening of the loop via the locking shoe on the other hand.

[0007] Operation is made easier in that the actuating section is provided with a triggering depression on its top, and that a fastening receiver for fixing the tourniquet strap is formed in it, so that the operator can concentrate completely on his actual work.

[0008] An advantageous embodiment of the construction resides in that the front section of the intermediate wall is formed on both sides on the inside of the adjoining lateral walls, while its rear section is separated by respective gaps from the adjoining lateral walls, or from strips of the intermediate wall formed thereon.

[0009] Furthermore, steps are advantageous for achieving dependable locking, wherein on the underside of its front section, the locking shoe has a downwardly projecting securing lug or a depression with a securing shoulder constituting the securing element, wherein the securing lug on the underside cooperates with a securing edge, or the depression with a securing projection on the top of the front section of the intermediate wall.

[0010] For dependable locking it can be furthermore provided in an advantageous manner that the rear securing element on the top of the locking shoe is embodied as an upwardly projecting securing lug or as a depression, wherein the securing lug on the top or the depression cooperate with a counter-element having a support section.

[0011] Moreover, the dependable functioning of the tourniquet device is aided in that the intermediate wall for clamping the tourniquet strap in place by means of the rocker has a downwardly projecting acute-angled securing edge as the clamping structure on the front edge of its underside, which is placed to prevent the tourniquet strap from being pulled back.

[0012] Functioning and handling, as well as a simple construction, are favored in that, while leaving open a pass-through opening for the tourniquet strap, a rearward extending and convexly upward curved actuating section is formed on the front or the rocker and is provided on its top with an actuating depression, which is concave toward the top.

[0013] A further advantageous step, by which a simple coordination, and therefore the operation, are favored, consists in that a cutout with an insertion element, which is releasably received therein, is provided on the top or covering wall.

[0014] In this connection an embodiment which is advantageous in regard to the construction and handling consists in that the cutout has lateral guide grooves, open toward the rear, into which the insertion element can be pushed, and that in the inserted state the contour of the rear edge of the insertion element ends flush with contour of the rear edge of the covering wall of the closure housing, and that the contour of the front of the actuation section is matched to the contour of the rear edge of the insertion element and of the covering wall.

[0015] The invention will be explained in greater detail in what follows by means of an exemplary embodiment, making reference to the drawings. Shown are in:

[0016]FIG. 1, a perspective plan view of a tourniquet device,

[0017]FIG. 2, a perspective plan view of a closure housing of the tourniquet device in FIG. 1,

[0018]FIGS. 3a) to e), various views of the closure housing in accordance with FIG. 2,

[0019]FIGS. 4a) to d), various views of a rocker of the tourniquet device in accordance with FIG. 1,

[0020]FIGS. 5a) to d), various views of a locking shoe of a tourniquet device in accordance with FIG. 1,

[0021]FIGS. 6a) to c), various views of an insertion element in a tourniquet device in accordance with FIG. 1,

[0022]FIGS. 7a) to d), various views of a fixating device for a tourniquet device, and

[0023]FIGS. 8a) to d), various views of a counter element for fixing the tourniquet element in place on a locking shoe in accordance with FIG. 5 by means of a fixating device in accordance with FIG. 7.

[0024] As its essential components, a tourniquet device 1 represented in FIG. 1 has a closure housing 2, a tourniquet strap 3, which is releasably fixed in place by means of a locking shoe 5 on the rear of the closure housing 2 and forms a loop 3.1, as well as a rocker 4 arranged in the closure housing 2 for the adjustable clamping of the tourniquet strip 3 in the closure housing 2. As can be seen in connection with FIG. 2, an insertion element 6, for example in the form of an information plaque, has been inserted into an appropriately embodied recess 2.3 on the top of a covering wall 2.4.

[0025] The closure housing 2, represented in greater detail in FIG. 2, is enclosed by two lateral walls 2.6 with respective recessed grips 2.7, a bottom wall 2.8 and a covering wall 2.4, and has on its rear an insertion opening for the tourniquet strap 3, and also the locking shoe 5, as well as the insertion element 6. On its front, the closure housing 2 is provided with an outlet opening 2.1, into which the rocker 4 can be inserted and from which the tourniquet strap 3 extends with its one end. On its underside, the recess 2.3 is delimited by a wall section 2.31, in which a securing section 2.32, embodied as a rectangular window, is provided, and has lateral guide grooves for pushing the insertion element 6 in from the rear 2.2, wherein the guide grooves are formed between the wall section 2.31 and sections of the covering wall 2.4 on both sides, as well as the sections of the lateral walls 2.6 which constitute the groove bottom. The recess 2.3 can also be embodied in a groove-like manner in its front area in order to also receive a front edge 6.3 of the insertion element 6 (see FIG. 6) in its completely pushed-in state.

[0026] As can be seen in greater detail in the plan views of FIG. 3, in particular the representations in FIGS. 3b), 3 c) and 3 d), an intermediate wall 2.9 has been attached inside the closure housing 2 between the covering wall 2.4 and the bottom wall 2.8 and is preferably formed on the latter, by means of which a pass-through shaft 2.10 for the tourniquet strap 3 is formed between the bottom wall 2.8 and the underside of the intermediate wall 2.9, and a receiving shaft 2.11 for inserting a plug-in section 5.1 of the locking shoe 5 (see FIG. 5) is formed between the top of the intermediate wall 2.9 and the underside of the covering wall 2.4, or of the wall section 2.31 formed on it. On its underside the intermediate wall 2.9 has a securing structure for clamping the tourniquet strap 3 in place, and its front lower edge 2.91 in particular is embodied at an acute angle, which results in a certain amount of resistance opposite the pulling direction of the tourniquet strap 3 when it is operating. The front upper edge forms a securing edge 2.92 in the form of a securing lug for a hook-shaped securing element 5.12 on the underside of the plug-in section 5.1 of the locking shoe 5. As can be seen in FIG. 3c), a resilient section 2.93 is formed in the rear section of the intermediate wall 2.1, which can extend forward past the center, by lateral notches, or gaps 2.94 opposite lateral sections of the intermediate wall 2.9 connected with the lateral walls 2.6. In the front area the intermediate wall 2.9 is continuously connected with the lateral walls 2.6, it is formed on them in particular.

[0027] A rib-like pivot support 2.81 is formed on the top of the bottom wall 2.8 of the closure housing 2 as a pivot bearing and for securing the rocker 4, which can also be seen in

[0028]FIGS. 3b), 3 c) and 3 d).

[0029] Details of the rocker 4 are represented in FIGS. 4a) to d). The rocker plate 4.1, which is pivotably seated by means of a pivot bearing 4.11 between transversely extending ribs or nubs on the pivot support 2.81, makes a transition in its front end area into an actuating section 4.2, which is embodied to be convex toward the front and upward and has a triggering depression 4.21 approximately in its center area, which is concave toward the top and has a beaded front edge for simpler tactile recognition and operation. A pass-through opening 4.3 for the tourniquet strap 3 is formed in the transition area between the rocker plate 4.1 and the actuating section 4.2. On the underside of the rocker plate 4.1, the pivot bearing 4.11 is restricted at its rear by means of downward extending spring tongues 4.12 with an insertion slope, so that the rocker 4 can be easily inserted from the front, guided in lateral grooves or similar guide tracks, into the pass-through shaft 2.10 of the closure housing 2 and snapped into the pivot support 2.81, and can also be released again by means of the spring tongues 4.12. In a view from above, the actuating section 4.2 has the shape of a tongue and is embodied, tapering toward the top, in the shape of a continuous curvature and fitted into a correspondingly shaped recess in the covering wall 2.4 of the closure housing 2.

[0030] The locking shoe 5, shown in greater detail in FIGS. 5a) to d), has in its rear area an actuating section 5.2, which is formed on the plug-in section 5.1, projects to the rear past the closure housing 2 in the inserted state and has an upwardly concave triggering depression 5.22 on its top. In a view from above, the front edge of the actuating section 5.2 is symmetrically curved and has two curvature sections, which make a steady transition into each other via a central curved section and are laterally convex toward the front and matched to a correspondingly extending contour of the rear edge of the covering wall 2.4 of the closure housing 2, so that definite seating results in the inserted state. In the interior, the actuating section 5.2 is provided with a fixation receiver 5.3, open toward the rear, for receiving a fixating element 7 with a counter-element 8 (see FIGS. 7 and 8) for fixing the tourniquet strap 3 in place, wherein the tourniquet strap 3 is extended out of an outlet opening 5.4 on the underside of the actuating section 5.2. The plug-in section 5.1 which is formed on the actuating section 5.2 and adjoins it at the front, is provided in its rear edge area with an upward projecting securing element 5.11, with which the locking shoe 5 is supported in the inserted state against the rear edge of the securing section 2.32 in the wall section 2.31 of the closure housing 2, wherein the locking shoe 5 is pushed upward by means of the rear resiliently acting section of the intermediate wall 2.9. In addition, on the underside of the front section of the plug-in section 5.1, the already mentioned securing element 5.12 is hooked to the front securing edge 2.92 of the intermediate wall 2.9. For releasing the locking shoe 5 it is merely necessary to press it downward by pushing on the actuating section 5.2, so that the securing element 5.11 on the one hand, and the securing element 5.12 on the other hand are released and the locking shoe 5 is disengaged and is automatically pulled at least partially by the pull of the preferably elastic tourniquet strap 3 out of the receiving shaft 2.11 and can then be taken out completely for opening the loop 3.1.

[0031] The insertion element 6, represented in greater detail in FIG. 6, preferably has lateral edges 6.2, which are conical in cross section, and a rear edge 6.2, which extends complementarily to the front edge of the actuating section 5.2 of the locking shoe, and the element is held by a defined clamping effect, but can be manually pushed out, in the recess 2.3. For identification the inserting element 6 can be designed in a desired color, or can be transparent for placing information underneath it, for example a name plate, or it can itself have a suitable legend.

[0032] The fixating device represented in FIGS. 7a) to d) has a fixation plate 7.1 with fixating elements 7.11 in the form of openings, and a hook element 7.12, which projects downward from its front, and on its rear makes a transition into a fixation block 7.2 formed on it. For fixing the tourniquet strap 3 in place, its end area is placed on the top of the fixation plate 7.1, is covered by a counter-plate 8.1 by means of the counter-element 8 represented in FIG. 8 and is fixed in place by means of counter-elements 8.11 in the shape of spike-like pins matched to the openings 7.11, after which the fixating element 7 and the counter-element 8 are clamped into the fixation receiver 5.3 of the locking shoe 5 and are held therein by means of the hook element 7.12, wherein the counter-plate 8.1 is supported by means of a support member 8.12 in the fixation receiver 5.3 in respect to the hook element 7.12 which engages the outlet opening 5.4.

[0033] A simple operation, along with a simple construction and good functioning, results from the described measures. 

1. A tourniquet device (1) for parts of the body, with a closure housing (2) having a bottom wall (2.8), two lateral walls (2.6) and a covering wall (2.4) on its top, with a tourniquet strap (3), which is or can be releasably connected with a locking shoe (5), an end of which at the closure housing (2) can be inserted from the rear between an intermediate wall (2.9) and the covering wall (2.4), which strap is or can be fed with its other free end between a rocker (4), pivotably seated on the bottom wall (2.8), and an intermediate wall (2.9) arranged at a distance from the latter, through the closure housing (2) and can be clamped by means of the rocker (4) against a front section of the intermediate wall (2.9), which is connected with the closure housing (2), characterized in that the intermediate wall (2.9) has a resilient section (2.93) projecting toward the top, by means of which the rear area of the locking shoe (5) is lifted and, in the introduced state, is pushed with its rear top area against an abutment (2.31) fixed on the housing, wherein the locking shoe (5) is secured against being pulled out toward the rear by means of a rear securing element (5.11) and/or a front securing element (5.12), which cooperate with a counter-element (2.32) or counterpiece (2.92) of the closure housing (5), and can be released by pressing its rear area downward.
 2. The tourniquet device in accordance with claim 1, characterized in that the locking shoe (5) has a plug-in section (5.1) for plugging into the closure housing (2), and for release an actuating section (5.2) connected to its rear.
 3. The tourniquet device in accordance with claim 2, characterized in that the actuating section (5.2) is provided with a triggering depression (5.22) on its top, and a fastening receiver (5.3) for fixing the tourniquet strap (3) in place is formed in it.
 4. The tourniquet device in accordance with one of the preceding claims, characterized in that the front section of the intermediate wall (2.9) is formed on both sides on the inside of the adjoining lateral walls (2.6), while its rear section is separated by respective gaps (2.94) from the adjoining lateral walls (2.6), or strips of the intermediate wall (2.9) formed thereon.
 5. The tourniquet device in accordance with one of the preceding claims, characterized in that on the underside of its front section, the locking shoe (5) has a downwardly projecting securing lug or a depression with a securing shoulder constituting the securing element, wherein the securing lug on the underside cooperates with a securing edge (2.92), or the depression with a securing projection on the top of the front section of the intermediate wall.
 6. The tourniquet device in accordance with one of the preceding claims, characterized in that the rear securing element (5.11) on the top of the locking shoe (5) is embodied as an upwardly projecting securing lug or as a depression, wherein the securing lug on the top or the depression cooperate with a counter-element having a support section.
 7. The tourniquet device in accordance with one of the preceding claims, characterized in that the intermediate wall (2.9) for clamping the tourniquet strap in place by means of the rocker (4) has a downwardly projecting acute-angled securing edge as the clamping structure (2.91) on the front edge of its underside, which is placed to prevent the tourniquet strap (3) from being pulled back.
 8. The tourniquet device in accordance with one of the preceding claims, characterized in that while leaving open a pass-through opening (4.3) for the tourniquet strap (3), a rearward extending and convexly upward curved actuating section (4.2) is formed on the front or the rocker (4) and is provided on its top with an actuating depression (4.21), which is concave toward the top.
 9. The tourniquet device in accordance with one of the preceding claims, characterized in that a cutout (2.3) with an insertion element (6), which is releasably received therein, is provided on the top or covering wall (2.4).
 10. The tourniquet device in accordance with claim 9, characterized in that the cutout (2.3) has lateral guide grooves (2.33), open toward the rear, into which the insertion element (6) can be pushed, in the inserted state the contour of the rear edge of the insertion element (6) ends flush with contour of the rear edge of the covering wall (2.4) of the closure housing (2), and the contour of the front of the actuation section (5.2) is matched to the contour of the rear edge of the insertion element (6) and of the covering wall (2.4). 